@interface NPKPaymentOptionsSerialization : NSObject + (id)_billingAddressDictionaryFromEncodedData:(id)a0; + (id)_contactFromEncodedData:(id)a0; + (void)_deleteAllDefaultBillingAddresses:(id)a0; + (void)handleSetTransactionDefaultsRequest:(id)a0; + (id)setTransactionDefaultsRequest; @end